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Date:	Thu, 24 Sep 2015 14:14:52 -0400
Message-ID:	<CANEvwqjtGTAB2tRvN2P3BKANr5fMG7LWtk_+1wSCNVKqOAFz1w@mail.gmail.com>
Subject:	Re: [geda-user] Off topic (UV printer)
From:	"Marvin Dickens (mpdickens AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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Hi,

Good UV print quality requires a lens with a very short focal length. 1.5"
or less - Preferably less. If your going to
chemically process the board after exposure, you can get great resolution
with a solid state device somewhere in
the range of 1064 nanometers with a short focal length lense. In fact,
repeatable, high resolution detail is easily
achievable on a budget.

If your not on a budget, a 30 to 50 watt fiber laser with a short focal
length lense can provide unparalleled resolution
without any post production work other than drilling (If you have the 50
watt device you can also drill really clean holes).

Best regards

Marvin Dickens

On Thu, Sep 24, 2015 at 1:47 PM, Britton Kerin (britton DOT kerin AT gmail DOT com)
[via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:

>
>
> On Thu, Sep 24, 2015 at 9:09 AM, Markus Hitter (mah AT jump-ing DOT de) [via
> geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
>
>> Am 24.09.2015 um 17:15 schrieb Nicklas Karlsson
>> (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]:
>> > Printing with UV light directly onto circuit boards would be the
>> perfect technology for prototypes. Have anybody here seen a suitable UV
>> printer or UV print head?
>>
>> You still need all the chemicals, still need the drilling and still have
>> no through hole contacts. Milling is much more convenient.
>>
>
> Yeah I started out with UV and I wouldn't recommend it at all.  Its hard
> to generate a really good mask and vias are a pain.
>
> I haven't tried milling though.  Markus do you use a soldermask?  How do
> yo do vias?  I looked at a rivet press thingy that was designed to do vias
> by hand but it was $600 or something for a hand tool so I decided to just
> buy boards, but sometimes the wait is really annoying.
>

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<div dir=3D"ltr">Hi,<div><br></div><div>Good UV print quality requires a le=
ns with a very short focal length. 1.5&quot; or less - Preferably less. If =
your going to</div><div>chemically process the board after exposure, you ca=
n get great resolution with a solid state device somewhere in</div><div>the=
 range of 1064 nanometers with a short focal length <span class=3D"" id=3D"=
:x2.1" tabindex=3D"-1" style=3D"">lense</span>. In fact, repeatable, high r=
esolution detail is easily</div><div>achievable on a budget.</div><div><br>=
</div><div>If your not on a budget, a 30 to 50 watt fiber laser with a shor=
t focal length lense can provide unparalleled resolution</div><div>without =
any post production work other than drilling (If you have the 50 watt devic=
e you can also drill really clean holes).</div><div><br></div><div>Best reg=
ards</div><div><br></div><div>Marvin Dickens</div></div><div class=3D"gmail=
_extra"><br><div class=3D"gmail_quote">On Thu, Sep 24, 2015 at 1:47 PM, Bri=
tton Kerin (<a href=3D"mailto:britton DOT kerin AT gmail DOT com">britton DOT kerin AT gmail.=
com</a>) [via <a href=3D"mailto:geda-user AT delorie DOT com">geda-user AT delorie DOT co=
m</a>] <span dir=3D"ltr">&lt;<a href=3D"mailto:geda-user AT delorie DOT com" targe=
t=3D"_blank">geda-user AT delorie DOT com</a>&gt;</span> wrote:<br><blockquote cla=
ss=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;pa=
dding-left:1ex"><div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><div cl=
ass=3D"gmail_quote"><span class=3D"">On Thu, Sep 24, 2015 at 9:09 AM, Marku=
s Hitter (<a href=3D"mailto:mah AT jump-ing DOT de" target=3D"_blank">mah AT jump-ing=
.de</a>) [via <a href=3D"mailto:geda-user AT delorie DOT com" target=3D"_blank">ge=
da-user AT delorie DOT com</a>] <span dir=3D"ltr">&lt;<a href=3D"mailto:geda-user@=
delorie.com" target=3D"_blank">geda-user AT delorie DOT com</a>&gt;</span> wrote:<=
br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left=
:1px #ccc solid;padding-left:1ex">Am 24.09.2015 um 17:15 schrieb Nicklas Ka=
rlsson<br>
(<a href=3D"mailto:nicklas DOT karlsson17 AT gmail DOT com" target=3D"_blank">nicklas.=
karlsson17 AT gmail DOT com</a>) [via <a href=3D"mailto:geda-user AT delorie DOT com" tar=
get=3D"_blank">geda-user AT delorie DOT com</a>]:<br>
<span>&gt; Printing with UV light directly onto circuit boards would be the=
 perfect technology for prototypes. Have anybody here seen a suitable UV pr=
inter or UV print head?<br>
<br>
</span>You still need all the chemicals, still need the drilling and still =
have<br>
no through hole contacts. Milling is much more convenient.<br></blockquote>=
<div><br></div></span><div>Yeah I started out with UV and I wouldn&#39;t re=
commend it at all.=C2=A0 Its hard to generate a really good mask and vias a=
re a pain.</div><div><br></div><div>I haven&#39;t tried milling though.=C2=
=A0 Markus do you use a soldermask?=C2=A0 How do yo do vias?=C2=A0 I looked=
 at a rivet press thingy that was designed to do vias by hand but it was $6=
00 or something for a hand tool so I decided to just buy boards, but someti=
mes the wait is really annoying.</div></div></div></div>
</blockquote></div><br></div>

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